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	Study of impacts affecting the lifetime of cement concrete coverings in the Czech Republic Láznička, Josef ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor) This thesis deals with the study of cement – concrete coverings. The aim of the thesis is a summary of current knowledge of these constructions. The experimental part of this paper deals with the design of concrete for the lower layer of cement – concrete cover. Emphasis is placed on the elimination of microcracks and to increase the lifetime of these construction. Detailed record
	The possibilities regulation of production hydration heat of concrete with plasticizer Hermann, Radek ; Halas, Vladimír (referee) ; Sedlmajer, Martin (advisor) This thesis studies the problematics of water reducing and high range water reducing admixtures and their influence on the process of hydration of cement pastes. The process of hydration is examined in this thesis both in terms of hydration heat and hydration temperature rise. Attention is also paid to the influence of plasticizers in combination with retarding admixture regarding rheological properties of modified fresh cement pastes and their mechanical properties after 3 and 7 days from mixing. Detailed record
	Study of possibilities of reduction of volume changes and development of hydration temperatures in concrete Pikna, Ondřej ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor) Volume changes are one of the priority characteristics of concrete that plays an important role place mainly in the durability of structures as such. These low volume changes are required especially for structures as: industrial concrete floors, massive structures and waterproof structures. One of the possibilities in reducing these changes is the use of mineral admixtures with suitable grain curve of aggregate. Another possibility is the use of shrinkage reducing admixtures. There can occur problem with efficiency (long term age) with other components of the mixture. Therefore, the effort of this work is to use the avaible processes for maximum reduction of shrinkage and hydration temperatures. Detailed record
	Influence of Ambient Temperature Conditions on Course of Solidification of Cement Stone Kolaja, Filip ; Kulísek, Karel (referee) ; Fridrichová, Marcela (advisor) Bachelor thesis in theoretical part deals with raw material, chemical and mineralogical structure of portland cement. With technology of his production, basics clinker minerals and his hydration. There is indicated also partitioning of cements. In experimental part is observed influence of extremely low and high temperature to the course of hydration of cement stone in compare with reference sample, hydrated at normal temperature conditions. Detailed record
	Study of impacts affecting the lifetime of cement concrete coverings in the Czech Republic Láznička, Josef ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor) This thesis deals with the study of cement – concrete coverings. The aim of the thesis is a summary of current knowledge of these constructions. The experimental part of this paper deals with the design of concrete for the lower layer of cement – concrete cover. Emphasis is placed on the elimination of microcracks and to increase the lifetime of these construction. Detailed record
	Study of possibilities of reduction of volume changes and development of hydration temperatures in concrete Pikna, Ondřej ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor) Volume changes are one of the priority characteristics of concrete that plays an important role place mainly in the durability of structures as such. These low volume changes are required especially for structures as: industrial concrete floors, massive structures and waterproof structures. One of the possibilities in reducing these changes is the use of mineral admixtures with suitable grain curve of aggregate. Another possibility is the use of shrinkage reducing admixtures. There can occur problem with efficiency (long term age) with other components of the mixture. Therefore, the effort of this work is to use the avaible processes for maximum reduction of shrinkage and hydration temperatures. Detailed record
	Influence of Ambient Temperature Conditions on Course of Solidification of Cement Stone Kolaja, Filip ; Kulísek, Karel (referee) ; Fridrichová, Marcela (advisor) Bachelor thesis in theoretical part deals with raw material, chemical and mineralogical structure of portland cement. With technology of his production, basics clinker minerals and his hydration. There is indicated also partitioning of cements. In experimental part is observed influence of extremely low and high temperature to the course of hydration of cement stone in compare with reference sample, hydrated at normal temperature conditions. Detailed record
	The possibilities regulation of production hydration heat of concrete with plasticizer Hermann, Radek ; Halas, Vladimír (referee) ; Sedlmajer, Martin (advisor) This thesis studies the problematics of water reducing and high range water reducing admixtures and their influence on the process of hydration of cement pastes. The process of hydration is examined in this thesis both in terms of hydration heat and hydration temperature rise. Attention is also paid to the influence of plasticizers in combination with retarding admixture regarding rheological properties of modified fresh cement pastes and their mechanical properties after 3 and 7 days from mixing. Detailed record

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